Mcconnels Mill RD over Slippery Rock Creek
PoorPosted for loadLawrence County, Pennsylvania · 037020 Slippery Rock Twp · Structure no. 000000000022561
- Built
- 1875
- 150 years old
- Condition
- Poor
- inspected September 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 100 ft
- 1 main span
- Daily traffic
- 150
- 2006 count
- Owner
- County
- County Highway Agency
About this bridge
Mcconnels Mill RD over Slippery Rock Creek is a steel girder and floorbeam system carrying Mcconnels Mill RD over Slippery Rock Creek in Lawrence County, Pennsylvania. It was built in 1875, so it is 150 years old, older than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 150 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2026. The structure is 100 ft (30.5 m) long and 14 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mcconnels Mill RD over Slippery Rock Creek built?
It was built in 1875, making it 150 years old in 2025.
What condition is Mcconnels Mill RD over Slippery Rock Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.
How much traffic does Mcconnels Mill RD over Slippery Rock Creek carry?
About 150 vehicles per day (2006 count), of which roughly 5% are trucks.
How long is Mcconnels Mill RD over Slippery Rock Creek?
The structure is 100 ft (30.5 m) long with a longest span of 91 ft (27.7 m) and a deck 14 ft wide.
Who owns Mcconnels Mill RD over Slippery Rock Creek?
It is owned by the County Highway Agency.